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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Popocatepetl output 4 letters:

LAVA: Popocatepetl output
LAVA: Popocatépetl output
ASH: Popocatepetl output
ASH: Popocatépetl output